Hello Andrey, ... On Dienstag, 12. Juni 2018 13:53:09 CEST Andrey Smirnov wrote: > diff --git a/Documentation/boards/imx/nxp-imx8mq-evk.rst > b/Documentation/boards/imx/nxp-imx8mq-evk.rst new file mode 100644 > index 000000000..2bc94e790 > --- /dev/null > +++ b/Documentation/boards/imx/nxp-imx8mq-evk.rst > @@ -0,0 +1,116 @@ > +NXP i.MX8MQ EVK Evaluation Board > +================================ > + > +Board comes with: > + > +* 3GiB of LPDDR4 RAM > +* 16GiB eMMC > + > +Not including booting via serial, the device can boot from either SD or > eMMC. + > +Downloading DDR PHY Firmware > +---------------------------- > + > +As a part of DDR intialization routine NXP i.MX8MQ EVK requires and > +uses several binary firmware blobs that are distributed under a > +separate EULA and cannot be included in Barebox. In order to obtain > +the do the following:: > + > + wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-7.2.bin > + chmod +x firmware-imx-7.2.bin > + ./firmware-imx-7.2.bin > + > +Executing that file should produce a EULA acceptance dialog as well as > +result in the following files: > + > +- lpddr4_pmu_train_1d_dmem.bin > +- lpddr4_pmu_train_1d_imem.bin > +- lpddr4_pmu_train_2d_dmem.bin > +- lpddr4_pmu_train_2d_imem.bin > + > +As a last step of this process those files need to be placed in > +"firmware/imx/":: > + > + for f in lpddr4_pmu_train_1d_dmem.bin \ > + lpddr4_pmu_train_1d_imem.bin \ > + lpddr4_pmu_train_2d_dmem.bin \ > + lpddr4_pmu_train_2d_imem.bin; \ > + do \ > + cp firmware-imx-7.2/firmware/ddr/synopsys/${f} \ > + firmware/imx/${f}; \ > + done > + > +DDR Configuration Code > +====================== > + > +The following two files: > + > + - ddr_init.c > + - ddrphy_train.c > + > +were obtained by running i.MX 8M DDR Tool that can be found here: > + > +https://community.nxp.com/docs/DOC-340179 > + > +Only minimal amount of necessary changes were made to those files. > +All of the "impedance matching" code is located in "ddr.h". > + > +Build Barebox > +============= > + > + make imv_v8_defconfig s/imv_v8_defconfig/imx_v8_defconfig/g Christian > + make > + > +Boot Configuration > +================== > + > +The NXM i.MX8MQ EVK Evaluation Board has two switches responsible for > +configuring bootsource/boot mode: > + > + * SW802 for selecting appropriate BMOD > + * SW801 for selecting appropriate boot medium > + > +In order to select internal boot set SW802 as follows:: > + _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
